The Essence of the Garuḍa Purāṇa 18.9

Garuḍapurāṇasāroddhāra 18.9

saptāhamadhyeyogarbhaḥsabhavenma
lināśayaḥ || prāyaśaḥsaṃbhavaṃtyatraputrāstvaṣṭāhamadhyataḥ